Here are photos of cage nuts used in the wing and horizontal stab. About 14 of them are used in the L-5. They are extremely hard to find. Here is a link to purchase them at a Stearman restoration shop.
https://yesteryearaviation.com/surplus-nut-plates
I did some searching on the drawings to find them but was unsuccessful. Wanted to see if they had an AN part number.
Charles
